期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.160502
关键词
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资金
- National Key Research and Development Program of China [2016YFA0302800, 2017YFA0304501, 2016YFA0302002]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB21010100]
- National Natural Science Foundation of China [11674361, 11227803]
- Youth Innovation Promotion Association CAS [2017378]
- IFRAF
- European Research Council under the European Community's Seventh Framework Programme (FP7) [341197]
We report on the first experimental realization of the controlled-NOT (CNOT) quantum gate and entanglement for two individual atoms of different isotopes and demonstrate a negligible cross talk between two atom qubits. The experiment is based on a strong Rydberg blockade for Rb-87 and Rb-85 atoms confined in two single-atom optical traps separated by 3.8 mu m. The raw fidelities of the CNOT gate and entanglement are 0.73 +/- 0.01 and 0.59 +/- 0.03, respectively, without any corrections for atom loss or trace loss. Our work has applications for simulations of many-body systems with multispecies interactions, for quantum computing, and for quantum metrology.
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